package com.GourmetDataBase;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import android.content.Context;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.database.sqlite.SQLiteOpenHelper;

public class GourmetDatabaseHelper extends SQLiteOpenHelper  {
	
    //The Android's default system path of your application database.
    private static String DB_PATH = "data/data/com.Gourmet/databases/";
 
    private static String DB_NAME = "LimaGourmet.sqlite";
 
    private SQLiteDatabase myDataBase; 
 
    private final Context myContext;
    
    public GourmetDatabaseHelper(Context context) {
    	 
    	super(context, DB_NAME, null, 1);
        this.myContext = context;
    }
    
    public void createDataBase() throws IOException{
    	 
    	boolean dbExist = checkDataBase();
    	SQLiteDatabase db_Read = null;

   /* 	if(dbExist){
    		//do nothing - database already exist
    	}else{*/
 
    		//By calling this method and empty database will be created into the default system path
               //of your application so we are gonna be able to overwrite that database with our database.
    		db_Read = this.getReadableDatabase(); 
    		
        	//this.getReadableDatabase();
 
        	try {
 
    			copyDataBase();
    			db_Read.close();
 
    		} catch (IOException e) {
 
        		throw new Error("Error copying database");
 
        	}
    	
 
    }
 
    private boolean checkDataBase(){
    	 
    	SQLiteDatabase checkDB = null;
 
    	try{
    		String myPath = DB_PATH + DB_NAME;
    		checkDB = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READONLY);
 
    	}catch(SQLiteException e){
 
    		//database does't exist yet.
 
    	}
 
    	if(checkDB != null){
 
    		checkDB.close();
 
    	}
 
    	return checkDB != null ? true : false;
    }
	
    private void copyDataBase() throws IOException{
    	 
    	//Open your local db as the input stream
    	InputStream myInput = myContext.getAssets().open(DB_NAME);
 
    	// Path to the just created empty db
    	String outFileName = DB_PATH + DB_NAME;
 
    	//Open the empty db as the output stream
    	OutputStream myOutput = new FileOutputStream(outFileName);
 
    	//transfer bytes from the inputfile to the outputfile
    	byte[] buffer = new byte[1024];
    	int length;
    	while ((length = myInput.read(buffer))>0){
    		myOutput.write(buffer, 0, length);
    	}
 
    	//Close the streams
    	myOutput.flush();
    	myOutput.close();
    	myInput.close();
 
    }
    
    public void openDataBase() throws SQLException{
    	 
    	//Open the database
        String myPath = DB_PATH + DB_NAME;
    	myDataBase = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READONLY);
 
    }
    
    @Override
	public synchronized void close() {
 
    	    if(myDataBase != null)
    		    myDataBase.close();
 
    	    super.close();
 
	}
    
    @Override
	public void onCreate(SQLiteDatabase db) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
		// TODO Auto-generated method stub
		
	}

}
